Piston for explosive-engines.



J. BITTNBR.

PISTON ron EXPLOSIVE ENGINES.

APPLICATION FILED 1'33. 7, 1911 1,017,498. Patented Feb.13, 1912 Joh n ,Bittner' JOHN BITTNER, OF NEWCASTLE, INDIANA.

PIs'roN Eon EXPLOSIVE-ENGINES.

Specification of Letters Patentv Patented Feb. 13,1912.

Application filed February 7, 1911. Serial No. 607,101.

To all whom it may concern:

lie it known that I, JOHN Brr'rxnn, a citizen of the United States, residing at Newcastle, in the county of Henry and State of Indiana, have invented new and useful Improvcments in Pistons for Explosive-Engines, of which the following is a specification.

This invention provides simple, effective and secure connecting means between the piston of an explosive engine and the rod connecting said piston to the crank shaft, the connection being such as to prevent possible injury to the walls of the cylinder.

In accordance with this invention the piston comprises two parts, a body and a head which are connected in any substantial manner, preferably by means of a screwthread joint, the head having ears or webs which are apcrtured to receive the pin by means of which the rod is connected to the piston, the construction being such as to admit of the rod being secured to the head preliminary to attaching the body of the piston to the head.

The in ention consists of the novel features, (hails of construction and combination of parts, which hereinafter will be more particularlyset. forth, illustrated in the accompanying drawing, and pointed out in the appended claims.

Referring to the drawing, forming a part of the specification, Figure 1 is a central longitudinal section of a. piston for explosive cn ines having the connecting rod so cured thereto )y means embodying the invention. Fig. is a detail view of the head of the piston disconnected from the body,

showing a. portion of the piston rod attached thereto. Fig. 3 is a sectional view of the body of the piston.

Corresponding andlilte parts are referred to in the following description, and indiacted in all the views of the drawing, by the same reference characters.

The piston comprises a body 1 and head 2. The body 1 is hollow and of cylindrical form and an end portion has its walls thiclc cued, as indicated. at 3, said thickened portion being grooved upon the outside to receive the plston rings and having the bore enlarged at its outer end and formed with internal serewtbreads 4. The head 2 has an outer flange 5 to eve-lap the thickened end of the body and has its edge portion formed with scrcwthreads ti to match the screwthreads 4 of the body. Ears or webs 7 are formed upon the inner side of the head and are apcrtured to receive the ends of the pin 8 by means of which the rod 9 is connected to the piston. The cars or webs 7 clear the inner walls of the thickened part 3 of the body and preferably constitute a part of the piston head. The pin 8 is passed through openings formed in the end of the rod 9 and in the parts 7, the ends of the pin coming about flush with the outer sides of the part 7 and said pin being retained in place by the inner walls of the body 1. After the rod 9 has been connected to the head 2 the latter is fitted into the end of the body 1 and secured thereto by means of the matching screwthreads 4 and 6. By having the flan e 5 overlap the end of the body 1 the strain incident to the explosion is relieved from the serewthrcads, as will be readily understood. Within the purview of the irlu'ention the head 2 may be secured within the body 1 in any manner.

From the foregoing description, taken in connection with the acepmpanying drawing, the advantages ofthc construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains, and While I have described the prineiple of operation of the invention, together with the dcvicewhich I now consider to be the embodiment thereof, I desire to have it understood that the device shown is merely illustrative, and that such changes may be made when desired as are within the scope of the claims appended hereto.

Having thus described the invention what is claimed as new, is

1. A piston com rising a hollow body, a. head detachably tted to and closing the hollow body and having a portion projecting therein, a rod, the projecting portion of the head and the rod having ansversely registering openings and a pin passing through the openin d of the head and rod and connecting the atter to the former and adapted to be retained in place by the inner' walls of the hollow body.

2. A piston comprising a hollow bod havin an end portlon internally threads a hen having a portion overlapping an end of the hollow body andhaving a ortion exsaid pin adapted to be held in place by the ternalljy threaded to make screwt read coninner Walls of the hollow body. 10 nection with the threaded end portion of In testimony whereof I effix my signathe hollow body, said head having projectture in presence of two witnesses.

5 ing portions uplon its inner side, a rod, and a JOHN BITTN ER.

in passing t rough registering openings Witnesses: ormed in the rod and projecting portions M. E. FORKNER, of the head to connect the rod to the latter, E.. J. DUNCAN. 

